Controlling mechanism for rotary casting-machines



A., A. LANDON.'

CONTROLLING MECH SM' FOR ROTARY CASTINGMACHINES.

APPL: N m2o ocT. r'a, 191s. 1,383,729. Patente Y 5, 1.

A, ,Y l a s SHE Y A.. A. LANDoN. l CONTROLLING MECHANISM FOR ROTARYCASTING MACHINES.

APPLICATION FILED OCT- IB, I9I6.

1,388,729. Patented July'5, 1921.

3 SHEETS-SHEET 2.

AI A. LANDON.

CONTROLLING MECHANISM FOR ROTARY CASTING MACHINES.

APPLICATION FILED OCT. I8, 1916.

Patented July 5, 1921.

3 SHEETS-SHEET 3 A @Hb/WW Wm @WQ rra at i". I i.

ARCHER A. LANDON, OE' BUFFALO, NEW YORK, ASSIGNOR TO .AMERICAN RADIATORCOMPANY, CHICAGO, ILL'JNOS', A CORPORATION OF NEW JERSEY.

CONTROLLING MECHANSIVL FOR ROTARY CASTING-MACHINES.

Specification of Letters Patent.

Patented .iu-1y 5, i921.

Application filed October 18, 1916. Serial No. 126,332.

To all w from t may concern.' v

Be it known that l, ARCHER A. LANDON, a citizen of the United States,residing vat Buffalo, Erie county, in the State of New York, haveinvented certain new and useful Improvements in Controlling Mechanismfor Rotary Casting-Machines,of which the following is a full, clear, andexact specification.

My invention relates to means for controlling the movement of a movablemember or carrier, and the same has for its object more particularly toprovide means to control the movement of the carrier of a revoluble casting machine in such a manner that the mold supports which are mountedupon the carrier may be properly positioned to permit of the loading orunloading of the molds thereon or to permit of the performing of anyoperation necessary or incidental to the casting operation.

One of the objects of the invention is to provide controlling means forarresting the movement of the carrier and holding it stationary inpredetermined positions.

Another Objectis to provide controlling means which willV operate togradually retard the movement of the carrier and then arrest themovement of the same.

Another object is to provide automatically operating means forcontrolling the movement of the carrier.

Another object is te provide means for controlling the movement of thecarrier which means will be actuated by the carrier. y

Another object is to provide iiuid lcontrolled means for controlling themovement of the carrier.

Another object is to provide means for arresting the movement of thecarrier at any time. l

,f )ther objects will in part be obvious and in part pointed outhereinafter.

To the attainment of the aforesaid objects and ends my inventionconsists in the novel details of construction, and in the combination,connection and arrangement of parts; hereinafter more fully describedand then pointed out in the claims.

ln the accompanying drawings showing an illustrative embodiment of theinventionn Figure 1 is a side view of a portion of a rotary castingmachine showing a controlmechanism occupying different positions,

and

Fig. 3 is an end view.

By way of illustration the controlling means 1s shown in connection witharevoluble casting machine of the type shown and described in myco-pending application, Serial No.` 788,050, filed September 4, 1913.This type of machine comprises a revoluble carrier mounted in a verticalposition and having mounted thereon a plurality of mold supports. Thecarrier is intermittently rotated to bring the supports successivelyinto a plurality of positions to enable the casting operations to beperformed in a substantially constant manner. At the rst position ofrest of the carrier the prepared mold is placed upon the mold support,at the second position of rest the molten metal v is poured into themold, and at the third position of rest the mold containing the castingis removed from the mold support.

Referring to the drawings the revoluble carrier comprises a hub10mounted upon a rotatable, horizontal shaft 11 and having a plurality ofradially extending arms or spokes 12 provided adjacent their 'outerends, with'laterally projecting studs 13 upon which arefpivotallymounted suitable mold supports 13. The outer ends of the spokes 12 arepreferably bifurcated and carry rollers 14, 14, 142, etc., rotatablymounted upon aXles'l.

Supported upon the floor are supports i 16, 16, and upon their uppersurfaces are secured brackets 17, 17 having bearings 18, 18 within whichthe trunnions 19, 19 ofa vertically disposed cylinder 20 are journa-led.Toi-king within the cylinder is a piston 21 carried bya piston rod 22the outer end of which is provided. with a seat 23 adapted to be engagedby the rollers 14, 14,

4with one end of a conduit 25. having its other end communicating with ahollow casting 26 secured to one of the trunnions 19'and rotatabletherewith. A pipe 27 leading from a suitable source of fluid supply alsocommunicates with the hollow casting 26, being held in connectiontherewith to permit rotation of the hollow casting with respect to thepipe 27 while maintaining' a fluid tight joint therewith. T he fluid,which is preferably water, is maintained under a pressure justsufficient to raise the piston 21V and piston rod when the seat 23 atthe outer end of the piston rod is free from engagement with the rollers14, 14', etc. Located in the conduit 25 is a valve 28 to control theflow of Huid to and from the cylinder 20. Secured to the outwardlyextending` end of the valve stem 29 is a lever 30, carrying a weight 31adjacent its free end, and an arm 32 connected by a link 33 with a lever34 pivotally secured to the upper or outer end of the cyinder 2U.Operatively connected to the lever 34 and extending upwardly therefromis a cam which is normally in the path of the rollers 14, 14, etc. Thevalve 23 in normally held in its open position by the weighted lever 30.As the revoluble carrier rotates the rollers 14, 14, etc., will besuccessively brought into engagement with the cam 35 and, when any oneof the rollers engages the cam, the cam will be forced to move toV theleft, as seen in Fig. 2, thereby depressing lever 34, link33 and armwhereby the valve 28 will be partially closed, Wvhen the roller movesout of engagement with the cam the weighted lever will open the valveand at the same time return the arm 32, link 33, lever 34 and cam 35 totheir normal positions so that the cam will be in readiness to beengaged by the nent one of the rollers 14, 14, etc.

Secured to the upper surfaces of the supports 16, 16, and at a suitabledistance from the brackets 17, 17, are brackets 36, 3G su 3- porting anoscillating lever 37 having tie portion thereof in rear of the point ofsupport inclined) 'upwardly relatively to the portion in front'of thepoint of support. Pivotally mounted upon the forward end of the lever 37is a member 33 the upper end of which, when the forward end of the lever37 is in its raised position as shown in Fig. 2, is adapted to beengaged by the Arollers 14, 14, etc., and serves as a stop to arrest themovement of the carrier.

Between the upper end of the member 38 and the lever 37 is a compressionspring 39 which will be compressed when the upper end is engaged by aroller thereby actingI as a buifer and insuring a yielding inwardmovement of the member 33 to prevent nndue shock as the carrier isbrought te rest. Outward movement of the member 38 due to the spring 39is limited by aibolt 40. Pivotally secured to the upper end of themember V38 is one end of a link 42 having` its other end pivotallyconnected to a lever 43 oscillatingly mounted between the supports 16,16. pivoted to the lever 43, and at its other end it is provided with aslot 45 engaging a lug 46 on the cylinder 2O and below the trunnions 19,19.

'llhe lever 37 is heldV in its raised position by means of a latch 41pivotally mounted between the supports 1G, 16 and engaging the lower endof the member 38. pon moving the latch 41 out of engagement with themember 33, the forward end of the lever 37 will drop a suihcientdistance to carry the member 3S out of the path of the rollers 14, 14',etc., and, at the same time, the rear end of the lever 37 will be raisedinto the path of the rollers, as shown in' Fig. 2.

The operation is as follows:-

Assuming the parts of the apparatus to be in the positions shown in Fig.1, in which iositions the revoluble carrier is at rest, if it is desiredto permit the carrier to rotate,

the latch 41 is actuated to free it from engagement with the member 33thereby allow ing the forward end of the lever 37 to drop and the rearend thereof to rise, as shown iu Fig. 2. its the upper end of the member33 is moved out of Contact with the roller 142 with which it was inengagement the spring 39 will expand until the outward movement of themember 33 is checked by the bolt 40. This outward movement of the member33 will cause a corresponding moveient of the link 44 whereby the outerend of the slot4ii will be moved from its engagement with the lug 4G asa consequence of which the cylinder 20 will be free to oscillate uponits trunnions 19, 19. As soon a the roller 142 is freed from engagementwith the member 33 the carrier willjcommence to rotate and the piston'21will be forced dewnwardly into the cylinder 2O by the pressure of theroller 14 which engages the seat 23 ou the ond of the piston rod 22, thefluid within the cylinder being forced out through the port 2:2-, andconduit 25E into the pipe 27, the valve 23 being open. During thedownward movement of the piston and piston rod, the seat 23 will bemaintained in engagement with the roller 14 as the cylinder is permittedtov oscillate upon its trunnions 1S), 19, whereby the outer end Vof thepiston rod is allowed to follow the are of travel of the roller 14. Y

firs the carrier continues to rotate the roller 142 vill engage the rearend of the lever 37, which is now in ,its raised position, and willdeiness the same thereby Vraising` the forward end of the leverto bringthe upper end of the member 33 in'torthe path of the roller 14 and atthe same time permitting the latch 41 to engage the lower end of themember 33 to hold it in raised position. ils the carrier rotates stillfarther the roller A link 44 has one of its endsk 14 will engage thecam35 and force the same to move to the left. This movement of the cam353 will move the lever 34, link 33 and arm 32 to partially close thevalve 28, and at the same time will raise the weighted end of lever 30.The partial closing of' the valve 28 serres to lessen the flow of fluidfrom the cylinder as a result of which the downward movement of thepiston 21 will be checked and the rotation of the carrier will beretarded, whereby the roller 14 will be prevented from engaging theupper end oi the member 38 with undue force. As the roller 14 engagesthe member 38 the spring 39 will be compressed to yieldingly bring thecarrier to a position of rest without shock and the inward movement ofthe upper end of the member 38, due to the compression of the spring,will cause a corresponding movement of the link 44 through the link 42and lever 43. As the link 44 moves inward the outer end of the slot 45will engage the lug 46 on the cylinder 20 and will cause the cylinder toswing upon its trunnions 19, 19 to an extent sufficient to carry theseat 23 on the piston rod 22, and also the cam out of engagement withthe roller 14. As the cam is Jfreed from engagement with the roller theweighted lever 30 will restore the arm 32, lintk 33, lever 34 and cam 35to their normal positions relatively to the cylinder, and at the sametime the movement of the lever 30.will open the valve 28 thus permittingfluid to flow freely into the cylinder. As the seat 23 on the piston rod22 is now free from engagement with the roller 14 the fluid entering thecylinder by way of the port 24 will raise the piston, and the seat 23will thus be brought into engagement with the roller immediatelyfollowing the roller 14.

When it is desired to rotate the carrier another step, the latch 41 isagain withdrawn from its operative or lever holding position f and theabove described operation is re peated.

1n order to permit thel revoluble carrier to be stopped at any time incase of emer gency, the weighted lever 30 may be raised to close thevalve 28 by a cord or the like 47. The closing of the valve will shutofi' the flow of fluid from the cylinder 2O thereby preventing thepiston 21 from continuing its downward movement as a result of which thecarrier will 'be Abrought to rest by reason of the fact that one of therollers 1 4, 14 etc, is in engagement with the seat 23 on the end of thepiston rod 22,

Having thus described my said invention, what 1 claim and desire tosecure by Letters Patentfist- 1. ln a'machine of the characterdescribed, the combination of a movable carrier, with a member adaptedto be engaged by said carrier and to be moved thereby, means controlledby said carrier for ret'arding the movement of said member after it hasbeen engaged by said carrier, and means for arresting the movement ofsaid carrier after the operation of said retarding means, subst'antiallyas specified.

2. ln machine of the character described,

the combination of a movable carrier, with means adapted to be engagedby said carrier to retard the movement thereof, means for arresting themovement of said carrier after the operation of said retarding means,and means controlled by said arresting means to move said retardingmeans outv of engage-l erative before'J the arresting means becomeseffective, substantially as specified.

4. In a machine of the character described, the combination of aAmovable carrier, with means for arresting the movement of the carrier, acylinder adapted to contain a fluid and provided with an outlet port, 'apiston working within the cylinder and adapted to be moved inwardly withrespect thereto by the carrier to force the fluid out of the cylinder,and means controlled by the carrier for checking-the flow of the fluidfrom the cylinder whereby the movement of the carrier will be retarded,said checking means being operative before said arresting means becomeseffective, substantially las specified.

5. In a machine of the character described, the combination of' amovable carrier, with means for arresting the `movement of the carrier,a cylinder adapted to contain a fluid and provided with an outlet port,'a piston working within the cylinder and adapted to be moved inwardlywith respect thereto by the carrier to Jforce the fluid out of thecylinder,v a normally open valve to govern the flow of fluid from thecylinder, and means controlled Vby the carrier for actuating the valveto check the flow of fluid from the cylinder, whereby the movement ofthe carrier will be retarded, said valve actuating means being operativebefore said arresting means becomes effective, substantially asspecified.

6. In a machine of the character described, the combination of a movablecarrier, with means for arresting the movement of the carrier, acylinder adapted to contain a Huid and provided with an outlet port, apiston working within the cylinder and adapted to be moved inwardly withrespect thereto'by the carrier to force the fluid out of the cylinder, anormally open valve Ato govern the i'low of luid 'from the cylinder, andmeans controlled by the carrier after a predetermined inward movement otthe piston for artuating` the valve to check the iow of fluid from thecylinder, whereby the movement of the carrier `will be retarded, saidvalve actuatingv means being operative before said arresting meansbecomes eiiiective, substantially as speciiied.

T. ln a machine oithe character described, the combination or. a movablecarrier, with means for arresting the movement ot' the carrier, anoscillating; cylinder, a piston working within the cylinder and adaptedto be moved inwardly with respect thereto by the carrier, means forretarding` the inward movement of the piston whereby the movement oi thecarrier will be retarded, said last-named means being operative beforethe arresting` means becomes effettive, and means act 'ated by saidarresting means tor controlling` the oscillation of said cylinder,substantially as specified.

S. in a machine of the character described, the combination oi a movablecarrier, with means ior arrestingthe'fmovement of the carrier.l anoscillating` cylinder adapted to contain a tluid and provided with anoutlet port, a piston working,` within the cylinder and adapted to bemoved inwardly with respect thereto by the carrier to force the fluidout ot' the cylinder, means tor checking?, the ilow of the fluid fromthe cylinder whereby the movement of the carrier will be retarded, saidchecking; means being operative before said arresting means becomeseiiieotive, and means actuated by said arresting means for controlling`the oscillation ot said cylinder,

substantially as specified.

9. ln aV machine ot the character described, the combination ot amovable carrier, with a stop for arresting' the movement thereof andmovable into and out ot the path ot the carrieigand means actuated bythe carrier during` the normal operation thereof 'for automaticallymoving; the stop into the path of the carrier after it has been movedout ot said path, substantially as speciied. Y

10. ln a machine oithe character described,the combination of a movablecarrier,

fwith a stop tor arrestingthe movement of Vthe carrier, said stopnormally tending` to move out ot the path ot the carrier, means .torholding the stop in its operative position in the path of the carrier,means to render said holding means inoperative, and means for returningthe stop to its operative position after said holding means has beenrendered inoperative, substantially as speci,- iied.

11. ln a machine of the character described, the combinationof a movablecarrier, with a stop for arresting the movement oi the carrier, saidstop normally tending to more ont et the path ofi the carrier, meansttor holding;` the stop in its operative position in the path olii thecarrier, means to render said holdine' means i1iopeiat`-. fe, andautomatically operated means i'or returning the stop to its operativeposition after said holding` means has `been rendered inoperative,substantially specified.

l2. ln a machine of the character described, the combination ot amovable carrier, with a stop for arrestiiri` the movement ot thecarrier, said stop normally tending),` to iove out oil the path of' thecarrier, means for holding,y the stop in. its operative position in thepath et vthe carrier, means to render said holding means inoperi jive,and means artuated by the carrici iter returning; tac stop to itsoperi-tivo position atter said holding` means'has been renderedinoperative, substantially as specified.

i3. in a machine ot the character described, the combination of amovable carrier, with a stop tor arresting,` the movement thereof, arocking' lever1 upon which the stop is carried, said lever normallytending' to rock to move the stop out ot the path ot the carrier, saidlever having` a portion adapted to move into the path oit the carrierwhen the stop has been moved out o' said path, whereby tie carrier willengage said portion to rock the lever to move the stop into the path et'the carrier, means for holding' the lei/'er in position with the stop inthe path ot the car ier, and means for rendering; said holding; meansinoperative, substantially specified;

le. ln a machine of the character described, the combination of amovable carrier provided with a plurality of members, with a stopadapter` to be engaged successively by said members to arrest themovement of the carrier, and means for retardinp,` the movement et' thecarrier adapted to be actuated successively by said members, saidretarcling,` means being,- actuated by one ot said membe s betereanother oi" said members engages said stop, whereby the movement eli thecarrier will be retarded before it is arrested, substantially asspeciiiec.

15in a machine or" the character described, the combination of a movablecarrier provided with plurality ot equi-distantly spaced members, with astop adapted to be engaged successively by said members to arrest themove ient oit the carrier, and means for retardingi the movement otl thecarrier adapted to be actuated successively by said members, saidretarding means being` actuated by one ot said members before another ofsaid members engages said stop, whereby the movement of the carrier willbe retarded before it is arrested, substantially as speciiied.

1G. In a machine of the character described, the combination of amovable carrier, with means for arresting the movement thereof, meansmovable into and out of operative relation te the carrier for retardingthe movement thereof before the arresting` means becomes effective, andmeans for controlling the movement of the retarding means,substantiallyr as specified.

17. In a machine of the character described, the combination of amovable carrier, with means for arresting the movement thereof, meansmovable into and out of operative relation to the carrier for retardingthe movement thereof before the arresting means becomes effective, andmeans actuated by the arresting means for controlling the movement ofthe retarding means, substantially as specified.

18. ln a machine of the character described, the combination of amovable carrier, with means for arresting the movement thereof, meansfor retarding the movement of the carrier before the arresting meansbecomes eective, and means controlled by said arresting means to movethe retarding means out of engagement with the carrier, substantially asspecified.

19. In a machine of the character described, the combination of amovable carrier, with a yielding stop for arresting the movementthereof, means adapted to be engaged by the carrierfor retarding themovement thereof before the yielding stop becomes effective, and meanscontrolled by the yielding stop to move the retarding means out ofengagement with the carrier, substantially as specified.

20. In a machine of the character described, the combination of amovable carrier, with means for arresting the movement of the carrier,an oscillating cylinder, a piston working within the cylinder and havinga piston rod adapted to be engaged by the carrier whereby the piston isadapted to be moved inwardly with respect to the cylinder, means forretarding the inward movement of the cylinder, and means actuated by thearresting means for controlling the oscillation of the cylinder,substantially as specified.

21. In a machine of the character described, tne combination of amovable earrier, with yielding means for arresting the movement of thecarrier, an oscillating cylinder, a piston working within the cylinderand having a piston rod adapted to be engaged by the carrier whereby thepiston is adapted to be moved inwardly with respect to the cylinder,means for retarding the inward movement of the cylinder, and meansactuated by the arresting means for controlling the oscillation of thecylinder, substantially as specified.

22. ln a machine of the character described, the combination lof amovable carrier, with a yielding stop for arresting the movementthereof, an oscillating cylinder adapted to contain a fluid and providedwith an outlet port, a piston working within the cylinder and having apiston rod adapted to be engaged by the carrier whereby the piston isadapted to be moved inwardly with respect to the cylinder to force theHuid out of the same, means for checking the flow of the fluid from thecylinder to retard the movement of the carrier, and means actuated bythe yielding stop to oscillate the cylinder to move the piston rod 'outof engagement with the carrier, 4substantially as specified 23. In amachine of the character described, the combination of a 'movablecarrier, with means for arresting the movement thereof and movable intoand out of the path thereof, means actuated by the carrier for movingthe arresting means into the path of the carrier after it has been movedout of said path, means movable into and out of operative relation withsaid carrier for retarding the movement thereof before said arrestingmeans becomes effective, and means actuated lby the arresting means asit is moved into and out of the path of the carrier to control themovement yof the retarding means, substantially as specified.

Signed at the city of Buialo, Erie county, in the State of New York,this 25th day of May, one thousand nine hundred and SiX- teen.

ARCHER A. LANDON. Witnesses:

CONRAD A. DmTERIcH, W. SoHoENBnnNEn.

